Hadleigh Schwartz

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I’m a PhD student in Computer Science at Columbia University, advised by Xia Zhou. I’m fortunate to also work with Dan Rubenstein and Changxi Zheng. My research develops media provenance and content authenticity technologies (i.e., tools to determine whether a piece of media is real or fake, how it was created, etc.). Right now, I’m particularly excited about audio, image, and video watermarking. I’m a recipient of a Columbia SEAS Presidential Distinguished Fellowship and an Amazon CAIT PhD Fellowship.

I recently interned at Cloudflare Research Cloudflare logo working on media provenance. Previously, my research centered on optical sensing and communication, including an internship at NASA’s Jet Propulsion Laboratory NASA logo where I developed a hardware-in-the-loop simulator for vision-based spacecraft navigation systems.

I completed my B.A. and M.S. in Computer Science at the University of Chicago, advised by Heather Zheng at the SAND Lab.

Email / LinkedIn / GitHub

Research

* Co-primary authors    P Patent pending
  1. Under submission
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    Streaming, Recapture-Robust WatermarksP
    Hadleigh Schwartz, Dan Rubenstein, Changxi Zheng, and Xia Zhou
  2. CCS
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    Combating Falsification of Speech Videos with Live Optical SignaturesP
    Hadleigh Schwartz, Xiaofeng Yan, Charles J. Carver, and Xia Zhou
    Proceedings of the 2025 ACM SIGSAC Conference on Computer and Communications Security (CCS), Taipei, Taiwan, 2025
  3. IROS
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    Set Phasers to Stun: Beaming Power and Control to Mobile Microrobots with Laser Light
    Charles J. Carver*, Hadleigh Schwartz*, Toma Itagaki, Zachary Englhardt, Kechen Liu, Megan Graciela Nauli Manik, Chun-Cheng Chang, Vikram Iyer, Brian Plancher, and Xia Zhou
    Proceedings of the 2025 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Hangzhou, China, 2025
  4. NSDI
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    Catch Me If You Can: Laser Tethering with Highly Mobile Targets
    Charles J. Carver*, Hadleigh Schwartz*, Qijia Shao, Nicholas Shade, Joseph Lazzaro, Xiaoxin Wang, Jifeng Liu, Eric Fossum, and Xia Zhou
    Proceedings of the 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI), Santa Clara, CA, USA, 2024
  5. LDLC
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    Multi-Gbps Visible Light Communication with High-Efficiency, Low-speckle Contrast White Laser Light
    Joseph Lazzaro, Xiaoxin Wang, Charles J. Carver, Nicholas Shade, Hadleigh Schwartz, Yanchen Liu, Xia Zhou, Jifeng Liu, and Eric Fossum
    Proceedings of Laser Display and Lighting Conference, Dublin, Ireland, 2025
  6. Security
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    Towards a General Video-based Keystroke Inference Attack
    Proceedings of the 32nd USENIX Conference on Security Symposium, Anaheim, CA, USA, 2023

Teaching

Emerging Scholars Program Jan. 2023-Dec. 2025
PhD Co-Coordinator

Computer Networks (CSEE 4119) Spring 2024, Spring 2025
Teaching Assistant

Columbia Teaching Development Program Summer 2024
Completed Foundational Track

Awards

Amazon-Columbia Center for AI Technology PhD Fellowship 2025
ACM MobiCom Best Demo Award 2023
Columbia CS Department Service Award 2023
Columbia School of Engineering and Applied Sciences Presidential Fellowship 2022
Phi Beta Kappa 2021
Student Marshal 2021
Enrico Fermi Scholar 2021
Robert Maynard Hutchins Scholar 2020